For -storage basins according to DIN 6620 -storage basins according to DIN 6625 (height 1-4 m) -battery storage basins made of plastic with general construction approval, for installation of up to 25 individual storage basins in series -tanks made of thermoplastics according to DIN EN 12573, part 1-3 -tanks made of thermoplastics according to DIN EN 13341, part 1-3 -GFK tanks and storage basins above ground level according to DIN EN 13121, parts 1-3